Tungaloy DCMT11T304-PS T9115 Turning Insert
High-Speed Steel Finishing Master | Premium T9115 CVD | Made in Japan
What is the best insert for high-speed finishing of carbon steel?
The Tungaloy DCMT11T304-PS T9115 is a high-performance CVD coated carbide turning insert engineered for excellence in high-speed steel machining. Utilizing the advanced T9115 grade, this insert features a thick Al2O3 layer that provides an exceptional thermal barrier, allowing it to withstand the extreme heat generated during continuous dry cutting. The -PS chipbreaker (Polish Style) is a high-sharpness geometry designed to provide stable chip evacuation even at low feed rates and shallow depths of cut. This Japan-made indexable turning tool with a 0.4mm corner radius is the professional choice for CNC machining shops looking to reduce cycle times while maintaining a high-gloss surface finish. Integrating this long-tail keywords optimized insert into your workflow ensures maximum tool life and unmatched dimensional stability.
Decoding the DCMT11T304-PS Technical Nomenclature
D
55° Rhombic
C
7° Clearance
M
M-Tolerance
T
Hole & Screw
11
11.6mm Edge
T3
3.97mm Thick
04
0.4mm Radius
-PS
Polish Style
Technical Specs: Metric vs. Imperial Comparison
| ISO Parameter |
Metric Unit |
Imperial Designation |
| ISO Model |
DCMT11T304-PS |
DCMT32.51-PS |
| Inscribed Circle (IC) |
9.525 mm |
3/8 inch |
| Thickness (S) |
3.97 mm |
5/32 inch |
| Corner Radius (RE) |
0.4 mm |
1/64 inch |
How does the T9115 CVD coating benefit my CNC production?
The T9115 Grade is Tungaloy's premium choice for high-speed steel turning. The CVD (Chemical Vapor Deposition) coating is exceptionally thick and smooth, reducing friction between the chip and the rake face. In precision machining, this leads to lower cutting temperatures and a reduction in built-up edge (BUE). The -PS chipbreaker is specialized for "Polish Style" finishing; it uses a sharp cutting edge to "peel" the material, preventing work hardening and ensuring a high-quality surface. For CNC machining operators, this indexable turning tool offers massive efficiency gains in high-volume steel production.
Recommended Cutting Parameters (T9115)
-
Cutting Speed (Vc): 150 - 350 m/min (Standard Steels)
-
Feed Rate (f): 0.05 - 0.20 mm/rev
-
Depth of Cut (ap): 0.2 - 1.5 mm
*Pro Tip: CVD coatings like T9115 reach peak performance at high cutting speeds. If your machine allows, push the Vc for better chip control.*
Feedback from Global Machinists
⭐⭐⭐⭐⭐ "Extreme Speed Stability" - Mark D., USA
"Switched to T9115 for our high-volume 1045 steel parts. We increased the SFM significantly and the tool life is still 30% longer than our previous brand."
⭐⭐⭐⭐⭐ "Mirror Finish Success" - K. Schmidt, Germany
"The -PS breaker is magic on finishing passes. Even at high speeds, the surface finish remains consistent across 200 parts. Premium Japan quality."
⭐⭐⭐⭐ "Very Reliable" - Hiroshi T., Japan
"Good chip control even with low feed rates. Stable performance in our CNC lathes for alloy steel components."
⭐⭐⭐⭐⭐ "Heat Resistance" - Luca F., Italy
"Ran these dry at high speed. The CVD coating handles the heat perfectly. Dimensional accuracy is outstanding."
⭐⭐⭐⭐⭐ "Original Stock" - Sarah L., UK
"Authentic Tungaloy inserts. Performance is exactly as the catalog states. Fast shipping and great results for our shop."
Technical Tooling Q&A
Q: Can I use T9115 for stainless steel?
A: T9115 is optimized for steel. For stainless steel, PVD grades like AH725 are generally better at preventing built-up edge and managing toughness.
Q: Is CVD better than PVD for steel finishing?
A: For high-speed, continuous finishing in steel, CVD (T9115) is superior due to its higher heat resistance. PVD is better for toughness and interrupted cuts.
Q: What tool holder fits this DCMT 11T3?
A: Fits all standard ISO holders like SDJCR/L 1212/1616 or internal boring bars like S...-SDUCR11.
Expert Choice: CVD Coated Carbide for Steel
In precision machining, CVD Coated Carbide (T9115) is the ultimate choice for high-speed efficiency. While cermet offers a higher shine, T9115 provides the heat resistance and substrate strength needed for high-productivity steel turning.
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